bison

mysql安装

由 元气小坏坏 提交于 2019-12-29 20:51:16
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 首先可以查看下是否安装了 cmake # rpm -qa |grep cmake # cd /usr/local/software # tar zxvf cmake-2.8.8.tar.gz # cd cmake-2.8.8 # ./bootstrap # make && make install ------------------------------------ 安装bison： # tar zxvf bison-2.5.tar.gz # cd bison-2.5 # ./configure # make && make install ------------------------------------ 创建mysql用户及用户组： # groupadd mysql # useradd -r -g mysql mysql 编译安装 MySQL 5.5.23 # tar xvf mysql-5.5.23.tar.gz # cd mysql-5.5.23/ # cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql # -DMYSQL_UNIX_ADDR=/tmp/mysql.sock # -DDEFAULT_CHARSET=utf8 # -DDEFAULT

How do i implement If statement in Flex/bison

由 拥有回忆 提交于 2019-12-29 11:41:54
问题 I dont get the error, please can you help me out, here is the .l and .y file.thanks. %{ #include "ifanw.tab.h" extern int yylval; %} %% "=" { return EQ; } "!=" { return NE; } "<" { return LT; } "<=" { return LE; } ">" { return GT; } ">=" { return GE; } "+" { return PLUS; } "-" { return MINUS; } "*" { return MULT; } "/" { return DIVIDE; } ")" { return RPAREN; } "(" { return LPAREN; } ":=" { return ASSIGN; } ";" { return SEMICOLON; } "IF" { return IF; } "THEN" { return THEN; } "ELSE" { return

How do i implement If statement in Flex/bison

由 蹲街弑〆低调 提交于 2019-12-29 11:41:11
问题 I dont get the error, please can you help me out, here is the .l and .y file.thanks. %{ #include "ifanw.tab.h" extern int yylval; %} %% "=" { return EQ; } "!=" { return NE; } "<" { return LT; } "<=" { return LE; } ">" { return GT; } ">=" { return GE; } "+" { return PLUS; } "-" { return MINUS; } "*" { return MULT; } "/" { return DIVIDE; } ")" { return RPAREN; } "(" { return LPAREN; } ":=" { return ASSIGN; } ";" { return SEMICOLON; } "IF" { return IF; } "THEN" { return THEN; } "ELSE" { return

Resolve conflict in bison grammar with space separated expression lists + if/then/else

由 对着背影说爱祢 提交于 2019-12-29 09:34:47
问题 I have the following yacc/bison/happy grammar: %token if TokenIf then TokenThen else TokenElse true TokenTrue false TokenFalse %left APP %right IF %% Hungry : NoHungry | Hungry NoHungry %prec APP | if Hungry then Hungry else Hungry %prec IF NoHungry : true | false bison -v tells me there are two conflicts in the following situation: State 12 2 Hungry: Hungry . NoHungry 3 | if Hungry then Hungry else Hungry . true shift, and go to state 2 false shift, and go to state 3 true [reduce using rule

loading external files flex bison - yyin?

由 老子叫甜甜 提交于 2019-12-29 08:23:15
问题 I am writing a basic language in flex + bison for my own personal research / to run simple scripts for fun. It takes user input via the command line, parses it, and executes the desired result. I would like to add functionality load files. for example, when the "load file 'somefile.src'" the file is loaded and automatically parsed, then the parser switches back to waiting for command line inputs. I haven't been able to make sense of the documentation and am pretty lost. It doesn't help that I

Bison: using the Union semantic type with a C++ parser

由 北慕城南 提交于 2019-12-25 05:18:50
问题 I've been trying to set up a little parser in Bison, but when I try to build it I get: stone.tab.cc: In member function ‘virtual int yy::StoneParser::parse()’: stone.tab.cc:507:81: error: invalid initialization of non-const reference of type ‘StoneDriver&’ from an rvalue of type ‘yy::StoneParser::semantic_type*’ yyla.type = yytranslate_ (yylex (&yyla.value, &yyla.location, driver)); I suspect the reason is there's a problem using union-defined semantic types with a bison-generated C++

flex+bison output in a glib's hash container

由 倾然丶 夕夏残阳落幕 提交于 2019-12-25 05:05:24
问题 I have managed considerable progress in parsing the bib file, but the next step is quite tough for my present level of understanding. I have created bison and flex code, that parses the bib file above correctly: %{ #include <stdio.h> %} // Symbols. %union { char *sval; }; %token <sval> VALUE %token <sval> KEY %token OBRACE %token EBRACE %token QUOTE %token SEMICOLON %start Input %% Input: /* empty */ | Input Entry ; /* input is zero or more entires */ Entry: '@' KEY '{' KEY ','{ printf("=====

flex+bison output in a glib's hash container

由 假装没事ソ 提交于 2019-12-25 05:05:05
问题 I have managed considerable progress in parsing the bib file, but the next step is quite tough for my present level of understanding. I have created bison and flex code, that parses the bib file above correctly: %{ #include <stdio.h> %} // Symbols. %union { char *sval; }; %token <sval> VALUE %token <sval> KEY %token OBRACE %token EBRACE %token QUOTE %token SEMICOLON %start Input %% Input: /* empty */ | Input Entry ; /* input is zero or more entires */ Entry: '@' KEY '{' KEY ','{ printf("=====

how to pass tkinter text to flex

由 六月ゝ 毕业季﹏ 提交于 2019-12-25 04:55:07
问题 I have a working c-bison-flex based project. I've started to build a python-tkinter environment for it, but I was fallen into a trap. I intended to copy the content of the tkinter's edit window to the buffer of 'c' application. There is no problem with text passing, I can reach the 'c' functions - but the buffer address is not known. The buffer is allocated by flex 'on the fly'. Any idea to workaround it? (Perhaps indifferent, but the system is Ubuntu.) 回答1: flex provides an interface for

Project on flex and bison

由 旧城冷巷雨未停 提交于 2019-12-25 03:36:24
问题 I have used flex and bison in order to make a lexical analyzer and a parser for an EBNF grammar . This work is done! I mean, when i put a file with a program I write, I can see if the program has mistakes. If it doesn't, I can see the whole program in my screen based on the grammar i have used. I have no problem in this. Now, I want to use loop handling and loop unrolling. Which part should I change? The lexical analyzer? The parser? Or the main after the parser? And how? 回答1: Introduction As
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